A bit old now (2002), but in its day this book taught some basic precepts of web design by using mostly negative examples. It wore a bit thin after a while and is now more a history lesson of what webpages, some pretty bad, looked like. A library website I know fairly intimately was mentioned on his weekly list of web pages that suck. Quite an honor for a flashy site.
Kind of wish there were a newer version of this around, but he does pretty well with his website: www.webpagesthatsuck.com